@Book{sitereport_77684,
 author = "那珂川町教育委員会, ",
 title = "観音山古墳群",
 volume = "6",
 publisher = "那珂川町教育委員会",
 year = 2003,
 series = "那珂川町文化財調査報告書 ",
 number = "63",
 url = https://sitereports.nabunken.go.jp/77684,
 }